Skip to content

RCU_a005 — Supply Undervoltage

Full alert identifier: RCU_a005_supplyUndervoltage

Alert description

The RCU power supply voltage is too low.

Potential impact

The RCU may not be able to perform backup power braking assist.

Set condition

The RCU power supply voltage is lower than 9 volts for 500 milliseconds or lower than 6.5 volts for 60 milliseconds.

Clear condition

Clears when the RCU power supply voltage has returned above 9.5 volts for 500 milliseconds.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of RCU_a005.

Browse all RCU alert codes